<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        div{
            background-color: red;
            width: 300px;
            height: 200px;
            display: inline;
        }
        span{
            background-color: green;
            width: 500px;
            height: 550px;
        }
    </style>
</head>
<body>
    <div>
        <span>1212121212</span>
    </div>
</body>
</html>